摘要
A new niobate Ba 3NaBiNb 10 O 30 was synthesized by the solid state reaction.The reaction mixture was characterized by thermogravimetric and differential thermal analysis (TG DTA),X ray diffraction and dielectric constant measurements.The results show that Ba 3NaBiNb 10 O 30 has an orthorhombic tungsten bronze structure with space group Cmm2 and the unit cell parameters are a=1.7660(1) nm,a=1.7626(1) nm,c=0.78621(6) nm,Z=4.Ba 3NaBiNb 10 O 30 undergoes two phase transitions at 200℃ and 400℃,respectively.
A new niobate Ba 3NaBiNb 10 O 30 was synthesized by the solid state reaction.The reaction mixture was characterized by thermogravimetric and differential thermal analysis (TG DTA),X ray diffraction and dielectric constant measurements.The results show that Ba 3NaBiNb 10 O 30 has an orthorhombic tungsten bronze structure with space group Cmm2 and the unit cell parameters are a=1.7660(1) nm,a=1.7626(1) nm,c=0.78621(6) nm,Z=4.Ba 3NaBiNb 10 O 30 undergoes two phase transitions at 200℃ and 400℃,respectively.
基金
FundedbytheNationalNaturalScienceFoundationofChina (N0 .5 0 0 0 2 007)MajorProgramofChineseMinistryofEducationandOpenFoundationofStateKeyLab.ofAdvancedTech.forMaterialsSynthesisandProcessing
